Launching today
Mister Blocks
Take a picture of your LEGO and AI will make a build
24 followers
Take a picture of your LEGO and AI will make a build
24 followers
Take a photo of the loose bricks on your table. Mister Blocks (powered by Claude) looks at what you actually have and suggests a few things to build from them, each with 3D step-by-step instructions you can turn, zoom and print. Don't like it? Ask the chat for changes. No pile handy? Describe a build in words and get one, from a robot dog to a voxel sculpture of a sports car. Every build is stud-checked. Free guides work offline.
Free
Launch Team
Dropbox SignSimple, secure eSignatures for the way your team works.
Promoted
Hey Product Hunt!
I built Mister Blocks for my son. We have the classic giant box of mixed LEGO (sets long broken up, instructions long gone), and every time he asked "what can I build?" I had no good answer. Now he takes a photo of the pile, and a few minutes later there are a few builds made from those exact bricks, with 3D step-by-step instructions. (I've ended up playing with it a lot myself.)
How it works:
📸 Photo mode: snap your loose bricks, upload, and Claude suggests a few possible builds from what it sees. A chat lets you follow up: "make it a tow truck", "use the blue plates", "smaller please".
✍️ Prompt mode: just describe something. Like this Boston Dynamics Spot: https://misterblocks.com/g/boston-dynamics-spot-brick
🗿 Voxel sculptures: bigger display pieces, e.g. Mega Dragonite (https://misterblocks.com/g/mega-dragonite) and the https://misterblocks.com/g/porsche-mission-s
Every guide is stud-checked, can be turned and zoomed in 3D, printed or saved as a PDF, and guides you've opened work offline.
Under the hood it runs on Claude Opus 5.5. Each build takes a few minutes and a couple of dollars of API. The first working version came out of the very first prompt; the next few days went into making the site actually display the bricks correctly. Stack: Vercel + Next.js + Cloudflare + MongoDB.
It's free. I'd love to hear what you build, and what it got wrong. Unofficial fan project; LEGO® is a trademark of the LEGO Group, which doesn't sponsor this.